package com.gxuwz.stats.controller.user;

import com.alibaba.excel.EasyExcel;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.gxuwz.stats.entity.AcademicPapers;
import com.gxuwz.stats.entity.DecisionConsulting;
import com.gxuwz.stats.entity.User;
import com.gxuwz.stats.security.jwt.JwtTokenUtil;
import com.gxuwz.stats.service.AcademicPapersService;
import com.gxuwz.stats.service.UserService;
import com.gxuwz.stats.utils.DateFormatUtil;
import com.gxuwz.stats.utils.ExcelExportUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletResponse;
import java.net.URLEncoder;
import java.text.SimpleDateFormat;
import java.util.*;
import java.util.stream.Collectors;

@RestController
@RequestMapping("/userAcademicPapers")
public class AcademicPapersUserController {
    @Autowired
    private UserService userService;
    @Autowired
    private AcademicPapersService academicPapersService;

    /**
     * 分页查询
     * @param params
     * @param currentPage
     * @param pageSize
     * @return
     */
    @GetMapping("/getUserAcademicPapersList")
    public ResponseEntity<Map<String, Object>> acaWoUserList(
            @RequestParam Map<String, String> params,
            @RequestParam(defaultValue = "1") int currentPage,
            @RequestParam(defaultValue = "10") int pageSize,
            @RequestHeader("Authorization") String authorization) {
        try {
            // 提取 Token
            String token = authorization.replace("Bearer ", "");

// 解析 Token 获取当前用户ID（假设使用 JWT）
            JwtTokenUtil jwtTokenUtil = new JwtTokenUtil();
            String userId = jwtTokenUtil.getUserIdFromToken(token); // 自定义工具类解析Token

            // 创建 MyBatis Plus 的 Page 对象进行分页查询
            IPage<AcademicPapers> page = new Page<>(currentPage, pageSize);
            QueryWrapper<AcademicPapers> queryWrapper = new QueryWrapper<>();


// 强制添加当前用户ID条件
            queryWrapper.eq("user_id", userId);

            // 模糊查询条件 - 成果名称
            if (params.containsKey("paperTitle") && params.get("paperTitle") != null && !params.get("paperTitle").isEmpty()) {
                queryWrapper.like("paper_title", params.get("paperTitle"));
            }

            // 模糊查询条件 - 成果类别
            if (params.containsKey("journalInfo") && params.get("journalInfo") != null && !params.get("journalInfo").isEmpty()) {
                queryWrapper.like("journal_info", params.get("journalInfo"));
            }

            // 模糊查询条件 - 成果名称
            if (params.containsKey("paperCategory") && params.get("paperCategory") != null && !params.get("paperCategory").isEmpty()) {
                queryWrapper.like("paper_category", params.get("paperCategory"));
            }

            // 模糊查询条件 - 成果类别
            if (params.containsKey("paperPublishDate") && params.get("paperPublishDate") != null && !params.get("paperPublishDate").isEmpty()) {
                queryWrapper.like("paper_publish_date", params.get("paperPublishDate"));
            }

            // 模糊查询条件 - 成果类别
            if (params.containsKey("paperIssn") && params.get("paperIssn") != null && !params.get("paperIssn").isEmpty()) {
                queryWrapper.like("paper_issn", params.get("paperIssn"));
            }

            // 精确查询条件 - 项目提交状态
            if (params.containsKey("paperStatus") && params.get("paperStatus") != null && !params.get("paperStatus").isEmpty()) {
                queryWrapper.eq("paper_status", params.get("paperStatus"));
            }

            // 精确查询条件 - 项目审核状态
            if (params.containsKey("paperReviewStatus") && params.get("paperReviewStatus") != null && !params.get("paperReviewStatus").isEmpty()) {
                queryWrapper.eq("paper_review_status", params.get("paperReviewStatus"));
            }


            // 调用 service 层的分页查询方法
            IPage<AcademicPapers> resultPage = academicPapersService.getAPListWithUserInfo(page, queryWrapper);

            // 构造返回结果
            Map<String, Object> response = new HashMap<>();
            response.put("code", 200);
            response.put("message", "查询成功");
            response.put("data", resultPage.getRecords());
            response.put("total", resultPage.getTotal());
            response.put("currentPage", resultPage.getCurrent());
            response.put("pageSize", resultPage.getSize());
            response.put("totalPages", resultPage.getPages());

            return ResponseEntity.ok(response);
        } catch (Exception e) {
            e.printStackTrace();
            Map<String, Object> errorResponse = new HashMap<>();
            errorResponse.put("code", 500);
            errorResponse.put("message", "查询失败: " + e.getMessage());
            return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(errorResponse);
        }
    }

    /**
     * 新增决策咨询数据
     */
    @PostMapping("/addAcademicPapers")
    public ResponseEntity<Map<String, Object>> saveAcademicPapers(@RequestBody AcademicPapers academicPapers) {
        System.out.println("前端数据：" + academicPapers);

        // 创建响应 Map
        Map<String, Object> response = new HashMap<>();

        // 1. 验证 username 是否存在
        String username = academicPapers.getUsername();
        if (username == null || username.isEmpty()) {
            response.put("code", 400);
            response.put("msg", "用户名不能为空");
            return ResponseEntity.badRequest().body(response);
        }

        // 2. 根据 username 查询 user_id
        String userId = userService.getUserIdByUsername(username);
        if (userId == null) {
            response.put("code", 400);
            response.put("msg", "用户不存在");
            return ResponseEntity.badRequest().body(response);
        }
        System.out.println("获取到的 user_id：" + userId);

        // 3. 设置 user_id 并保存
        academicPapers.setUserId(userId);

        // 4. 自动计算分值
        int baseScore = academicPapersService.getScoreByType(academicPapers.getPaperCategory());
        academicPapers.setPaperScore(baseScore);

        // 5. 计算总分值表
        double totalScore = academicPapersService.calculateTotalScore(academicPapers);
        academicPapers.setPaperTotalScore(totalScore);

        academicPapers.setPaperStatus("未提交");
        academicPapers.setPaperReviewStatus("未审核");



        try {
            // 保存到数据库
            academicPapersService.save(academicPapers);
            String year = null;
            if (academicPapers.getPaperPublishDate() != null) {
                try {
                    // 支持 "yyyy-MM" 或 "yyyy/MM" 或 "yyyy" 格式
                    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM");
                    year = new SimpleDateFormat("yyyy").format(sdf.parse(academicPapers.getPaperPublishDate()));
                } catch (Exception e) {
                    // 如果格式不对，兜底取前4位
                    year = academicPapers.getPaperPublishDate().substring(0, 4);
                }
            }
            if (year != null) {
                academicPapersService.updateTotalWorkPaperScore(userId, year);
            }


            // 返回成功响应
            response.put("code", 200);
            response.put("msg", "新增成功");
            return ResponseEntity.status(HttpStatus.CREATED).body(response);
        } catch (Exception e) {
            response.put("code", 500);
            response.put("msg", "服务器内部错误");
            return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(response);
        }
    }

    /**
     * 修改决策咨询数据
     */
    @PutMapping("/updateAcademicPapers")
    public ResponseEntity<Map<String, Object>> updateAcademicPapers(
            @RequestBody AcademicPapers academicPapers
    ) {
//        System.out.println("2143432="+academicPapers);
        // 1. 自动计算分值
        int baseScore = academicPapersService.getScoreByType(academicPapers.getPaperCategory());
        academicPapers.setPaperScore(baseScore);

        // 2. 计算总分值
        double totalScore = academicPapersService.calculateTotalScore(academicPapers);
        academicPapers.setPaperTotalScore(totalScore);

        academicPapersService.updateById(academicPapers);
        String year = null;
        if (academicPapers.getPaperPublishDate() != null) {
            try {
                // 支持 "yyyy-MM" 或 "yyyy/MM" 或 "yyyy" 格式
                SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM");
                year = new SimpleDateFormat("yyyy").format(sdf.parse(academicPapers.getPaperPublishDate()));
            } catch (Exception e) {
                // 如果格式不对，兜底取前4位
                year = academicPapers.getPaperPublishDate().substring(0, 4);
            }
        }
        if (year != null) {
            academicPapersService.updateTotalWorkPaperScore(academicPapers.getUserId(), year);
        }

        Map<String, Object> response = new HashMap<>();
        response.put("code", 200);
        response.put("msg", "修改成功");
        return ResponseEntity.ok(response);
    }

    /**
     * 删除
     */
    @DeleteMapping("/delUserAcaPapers")
    public ResponseEntity<Map<String, Object>> deleteUserAcademicPapers(@RequestBody List<Long> academicPapersIds) {
        // 1. 查出所有要删的数据
        List<AcademicPapers> toDelete = academicPapersService.listByIds(academicPapersIds);

// 2. 记录所有受影响的 userId+year 组合
        Set<String> userYearSet = new HashSet<>();
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy");
        for (AcademicPapers ap : toDelete) {
            if (ap.getUserId() != null && ap.getPaperPublishDate() != null) {
                String year;
                try {
                    year = new SimpleDateFormat("yyyy").format(new SimpleDateFormat("yyyy-MM").parse(ap.getPaperPublishDate()));
                } catch (Exception e) {
                    year = ap.getPaperPublishDate().substring(0, 4);
                }
                userYearSet.add(ap.getUserId() + "#" + year);
            }
        }

// 3. 删除
        academicPapersService.removeByIds(academicPapersIds);

// 4. 删除后，逐个更新 TotalWork
        for (String userYear : userYearSet) {
            String[] arr = userYear.split("#");
            String userId = arr[0];
            String year = arr[1];
            academicPapersService.updateTotalWorkPaperScore(userId, year);
        }
        Map<String, Object> response = new HashMap<>();
        response.put("code", 200);
        response.put("msg", "删除成功");
        return ResponseEntity.ok(response);
    }

    // 用户-提交
    @PostMapping("/submitAcademicPapers")
    public ResponseEntity<Map<String, Object>> submitAcademicPapers(@RequestBody Map<String, Object> params) {
        Map<String, Object> response = new HashMap<>();
        Long paperId = Long.valueOf(params.get("paperId").toString());
        AcademicPapers paper = academicPapersService.getById(paperId);
        if (paper == null) {
            response.put("code", 404);
            response.put("msg", "数据不存在");
            return ResponseEntity.status(HttpStatus.NOT_FOUND).body(response);
        }
        paper.setPaperStatus("已提交");
        paper.setPaperReviewStatus("未审核");
        paper.setPaperReviewTime(null);
        paper.setPaperSubmissionTime(java.time.LocalDateTime.now());
        academicPapersService.updateById(paper);
        response.put("code", 200);
        response.put("msg", "提交成功");
        return ResponseEntity.ok(response);
    }

    // 用户-撤回
    @PostMapping("/revokeAcademicPapers")
    public ResponseEntity<Map<String, Object>> revokeAcademicPapers(@RequestBody Map<String, Object> params) {
        Map<String, Object> response = new HashMap<>();
        Long paperId = Long.valueOf(params.get("paperId").toString());
        AcademicPapers paper = academicPapersService.getById(paperId);
        if (paper == null) {
            response.put("code", 404);
            response.put("msg", "数据不存在");
            return ResponseEntity.ok(response);
        }
        // 只有审核通过/审核不通过不能撤回，其余都能撤回
        if ("审核通过".equals(paper.getPaperReviewStatus()) || "审核不通过".equals(paper.getPaperReviewStatus())) {
            response.put("code", 400);
            response.put("msg", "已审核，不可撤回");
            return ResponseEntity.ok(response);
        }
        paper.setPaperStatus("未提交");
        paper.setPaperReviewStatus("未审核");
        paper.setPaperSubmissionTime(null);
        paper.setPaperReviewTime(null);
        academicPapersService.updateById(paper);
        response.put("code", 200);
        response.put("msg", "撤回成功");
        return ResponseEntity.ok(response);
    }

    @GetMapping("/export")
    public void exportAcademicPapers(
            @RequestParam(value = "year", required = false) String year,
            @RequestHeader("Authorization") String authorization,
            HttpServletResponse response) throws Exception {
        System.out.println("year=="+year);
        // 1. 解析token获取userId
        String token = authorization.replace("Bearer ", "");
        JwtTokenUtil jwtTokenUtil = new JwtTokenUtil();
        String userId = jwtTokenUtil.getUserIdFromToken(token);

        // 2. 查找用户名
        User user = userService.getOne(new QueryWrapper<User>().eq("user_id", userId));
        String username = user != null ? user.getUsername() : "未知用户";

        // 3. 查询 AcademicPapers（可按年份筛选）
        QueryWrapper<AcademicPapers> queryWrapper = new QueryWrapper<>();
        queryWrapper.eq("user_id", userId); // 只查当前用户
        if (year != null && !year.isEmpty()) {
            queryWrapper.like("paper_publish_date", year.substring(0, 4));
        }
        // 只导出审核通过的数据
//        queryWrapper.eq("paper_review_status", "审核通过");

        List<AcademicPapers> list = academicPapersService.list(queryWrapper);

        // 4. 查询所有用户，构建 userId -> username 映射
        List<User> userList = userService.list();
        Map<String, String> userIdNameMap = userList.stream()
                .collect(Collectors.toMap(User::getUserId, User::getUsername, (a, b) -> a));
        for (AcademicPapers p : list) {
            p.setUsername(userIdNameMap.getOrDefault(p.getUserId(), ""));
        }
        // 统一格式化日期字段
//        DateFormatUtil.formatDateField(list, "paperPublishDate",
//                new String[]{"yyyy-MM-dd", "yyyy/MM/dd", "yyyy-MM", "yyyy年MM月dd日", "yyyy年MM月", "yyyy"},
//                "yyyy-MM-dd");

        // 5. 给每条数据加序号
        for (int i = 0; i < list.size(); i++) {
            list.get(i).setRowNum(i + 1); // 从1开始
        }

        // 5. 生成文件名
        String now = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss").format(new Date());
        String fileName = "学术论文-" + username + "-" + now + ".xlsx";
//        fileName = URLEncoder.encode(fileName, "UTF-8").replaceAll("\\+", "%20");


//        // 6. 设置响应头
//        response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
//        response.setHeader("Content-Disposition", "attachment;filename*=UTF-8''" + fileName);

        // 7. 导出
        ExcelExportUtil.export(response, list, AcademicPapers.class, "学术论文", fileName);
    }
}
